Cinematograph apparatus



May 5, 1931. A. s. NEWMAN CINEMATOGRAPH APPARATUS Filed May 28. 1929 ArZhurSaJmzeLNnmaIg/ INVENTOR BY HIS ATTORN EYS.

Patented May 1931 UNITED STATES PATENT OFFICE ARTHUR sANIUEI. NEWMAN, 0E HIGHGATE, ENGLAND, AssieNon. 'ro KODAK, LIMITED, 0E HOLBOBN, LoNnoN, ENGLAND CINEMATOGRAPH APPARATUS Application filed May 28, 1929, Serial No. 366,719, and in Great Britain June 1, 1928.

The invention relates to that kind of --cinematograph apparatus in which the main of rest of the film shaft has a crank mounted thereon, the pin of which gives motion to a block sliding within a slot in a lever, sa d lever being mounted upon the driven shaft, which latter gives motion to the mechanism for drivprovide improved means for varying the amount of eccentricity between the driving shaft and the driven shaft and, further, to combine with such driving mechanism improved means for driving the film. According to the present invention the driving shaft is mounted in a bearln 1n one side of a casing and the driven s aft is mounted in a bearing in the opposite side of the casing, and means are provided for allowing one side of the casing to be moved with respect to the other side of the casing and for fixing the two parts of the casing in any desired relationship to each other.

The driven shaft is provided with a crank, the crank pin of which gives motion to one end of a lever which is pivoted intermediate of its ends to a swinging shaft and the driving claws are preferably pivoted to the said lever so that they may swing inde-- pendently of each other. For this purpose a bar forming part of the said lever is provided with a cross bar having pins acting as stops for the two. claw levers, which latter are normally retained against the stops by means of a suitable spring.

The parts are preferably so arranged that the straighter side of the D shaped path traversed by the claws is closer to the path of the film at the entering end than at the leaving end. From this it results that the claws commence to drive the film before they have entered fully into the perforations. As they continue to drive the film the springs cause the claws to fully enter to that of the feeding on. Upon the driving block 5, a part 6 of which is formed to slide the perforations, and the clawsrock upon the said rocking shaft and slowly leave the stops carried by the main lever.

At the end of the driving stroke of the main lever, when the crank pin of the secondary shaft, the secondary shaft and the axis of the swinging shaft are in alignment, the stops on the ends of the said cross bar again come into contact with the claw levers and move them slowly out of the perfora- 'tions while the film is stationary- One side of the casing, preferably. that s1de carrying the bearin for the driving shaft, is provided with a ange having apertures therein. adapted to receive binding screws, and the other side of' the casing carrying the bearing for the driven shaft is hkewise provided-with a flange provided with slots adapted to guide'this last ment1oned part of the cas ng with respect to the said binding screws, and said binding screws are employed in combination with the slots to fix the two parts of the casing withrespect to each other.

The invention is illustratedin the accompanying drawings in which:

Flg. 1 is a front elevation of a projecting apparatus partly broken away.

Fig. 2 is a side elevation of the same, partbroken away, and Fig. 3 is a section 30 t rough the casmg containing the driving mechanism and also partly broken away.

Fig. 4 shows diagrammatically, on an enlarged scale, a path throu h which the claws would pass if unmodifie by the film support.

2 is the driving shaft which is provided with a crank 3 having a driving pin 4 there pin 41s mounted a so within a slotted crank 7 carried by a driven shaft 8.

The inner ends of the driving shaft 2 and of the driven shaft 8 are mounted within a casing 9 having a flange 10 against which fits a closing plate 11.

It will be noticed from Fig. 3 that the driven shaft 8 is mounted on and is concentric with respect to the casing 9 and that the driving shaft 2 is mounted in the plate tained against stops 28, carried at both ends 7 more rapid.

The casing is preferably made oil tight.

The driven shaft 8 is. provided with a crank 14 which is pivoted at its outer end at 15 to the main lever 16 which latter is pivoted intermediate of its ends upon a swinging shaft 17 which projects across the film.

The swinging shaft 17 is-connected by arms 18 to a rocking shaft 19 mounted in bearings 20 carried by the base plate 210. The swinging shaft 17 arms 18 and rocking shaft 19 areall preferably made tubular, thereby reducing the weight of these reciprocating arts. P The rocln'ng shaft 19 is located entirely on one side of the path-of the film and 1t is of such a length and the bearings 20 are at such a distance apart to ensure that there is no shake on the swinging shaft 17, although this latter is quite free to swing with the rocking shaft. 19.

The main lever is made .in several parts; the part 16 being rigidly fixed to a ortion 21 which is pivoted on the swinging s aft 17 and'has connected. to it one end' of a sleeve 22 which is fixed at its other end to a central bar 23 upon the upper end of which is fixed a cross bar 24.

Surrounding the sleeve 22 is an outer sleeve 25 to which is fixed one of the claw levers 26. The other claw lever 26 is fixed to a sleeve 27 mounted on the swinging shaft -17. The claw levers 26 are normally reof the cross bar 24, by means of a leaf spring 29 which is perforated about its centre. and is placed over a screw 30 carried bythe bar 23.

One end of the spring 29 bears upon the end of the sleeve 22 mounted on the'shaft 17, and the other. end of the Spring 29 bears upon the centre of a cross bar 31,.the ends of which bear upon the claw levers 26, carrying the claws 32.

A nut33 upon the screw 30 enables the pressure of the spring 29 to be adjusted.

' The spring 29 and the bar'3l may be readily retained in position with respect to each other and with relation to the claw levers by means of pins 34' on the claw levers 26 pass in through holes in the end of the bar 31. Tie bar-31 may carry a pin 35-which passes through the endof the'spring 29.

The straighter side of the .D shaped path traversed by the claws is closer to the path be supported by the film,'and the claws rock .upon the said swinging shaft 17 and slowly leave the stops 28 carried by the part 23 of themain lever. v

At the end of the driving stroke of the main lever when the crank pm 15, the crank 14, the driven shaft 8 and the swinging shaft 17 are in alignment, the stops 28 on the ends of the cross bar 24 again come into contact with the claw levers 26 and movethem slowly out ofthe perforations while the film is stationary.

It will benoticed from Fig. 2- that the claws are set at such an angle as to be practically a tangent to a circle struck from the axis of the swinging shaft 17 that they enter and leave the perforations when the main lever is merely rocking on the swinging shaft 17 without causing any motionof the film, and that they only move the film when the main lever is being drawn downwardly by the crank pin 15 driving the same.

The gate 36 is spring pressed as usual towards the rear plate 37, the two parts '36 and 37 .being retained in relation to each other by anysuitable means, not shown.- 38 is the aperture in the gate.

As there is no novelty in the gate the whole of the gate is not shown, and the spring for retaining the parts 36 and 37 in contact with each other or in contact with the fihn' 39 (shown only in Figs..2 and 4) is likewise not shown.

In Fig. 4 the broken line 40 denotes the path that the claws would take if it were not modified by the support of the film.

Although the drawings show-a projecting apparatus the mechanism is equally suitable for use in a'cinematograph camera. What I claim as my invention is 1. In means for driving cinematograph apparatus the combination of a driving shaft, a crank on said main shaft, a driving pin on said crank, a slotted crank driven bythe crank pin, a driven shaft on which the slotted crank is mounted, a casing having a closing plate, a bearing on said closing plate in which the driving shaft is mounted, a bearing on the casing in which the driven shaft is mounted, means provided.

pivoted intermediate of its ends, and claws slotted crank is mounted, a casing having a closing plate, a bearing'on said closing plate in which the driving shaft is mounted,

a bearing on the casing in which the driven shaft is mounted, means provided on the closing plate and on the casing to enable these latter to slide and to be fixed with respect to each other, acrank on the driven shaft, a lever one end of which is driven by the said last mentioned crank, a swinging shaft on which the said lever is pivoted intermediate of its ends, and claws separately pivoted on the swingin shaft and moved by the other end of said lever, substantially as set forth.

3. In means for driving cinematograph apparatus the combination of a driving shaft, a crank on said main shaft, a driving pin on said crank, a slotted crank driven by the crank pin, a driven shaft on which the slotted crank is mounted, a casing having a closing plate, a slotted flange on the casing, screws passing through the slotted flange and entering the closing plate, a bear ing on said closing plate in which the driving shaft is mounted, a bearing on the casing in which the driven shaft is mounted, a crank on the driven shaft, a lever one end of which is driven by the lastmentioned crank, a swinging shaft on which the said lever is pivoted intermediate of its ends,

and claws moved by the other end of said lever, substantially as set forth.

4. In means for driving cinematograph apparatus the combination of a driving shaft, a crank on said main shaft, a drivin pin on said crank, a slotted crank drlven by the crank pin, a driven shaft on which the slotted crank in mounted, a casing having a closing plate, a slotted flange on the casing, screws passing through the slotted flange and entering the closing plate, abearing on said closing plate in which the driving shaft is mounted, a bearing on the casing in which the driven shaft is mounted, a crank on the driven shaft, a lever one end of which is driven by the last mentioned crank, a swinging shaft on which the said lever is pivoted intermediate of its ends,

and claws separately pivoted on the swinging shaft and moved by the other end of said lever, substantially as set forth.

5. In means for driving cinematograph apparatus the combination of a driving shaft, a crank on said main shaft, a driving pin on said crank, a slotted crank driven by the driving in, a driven shaft on which the slotted era is mounted, a casing having a closing plate, a bearing on said closing late in whichthe driving shaft is mounted, a earing on the casing in which the driven shaft is mounted, means provided on the closing plate and on the casing to enable these latter to slide and to be fixed with respect to each other, a crank on the driven shaft, a

mentioned crank, a swinging shaft on which the said lever is pivoted intermediate of its ends, a rocking shaft arms connecting the rocking shaft to the said swingin shaft, and claws moved by the other end 0 said lever, substantially as setforth.

6. In means for driving cinematograph' apparatus the combination of a driving shaft, a crank on said main shaft, adriving lever one end of which is driven by the last I pin on said crank, a slotted crank driven by the driving pin, a driven shaft on which the slotted crank is mounted, a casing having a closing plate, a bearing on said closing plate in whlch the driving shaft is mounted, a bearing on the casing in which the driven shaft s mounted, means provided on the closing plate and on the casing to enable these latter to slide and to be fixed with respect to each other, a crank on the driven shaft, a lever one end of which is driven b the last mentioned crank, a swinging sha t on which the said lever is pivoted intermediate of its ends a rocking shaft, arms connecting the rocklng shaft to the said swinging shaft, and claws separately pivoted on the swinging shaft and moved by the other end of said lever substantially as set forth. 7. In means for driving cinematograph apparatus the combination of a driving s aft, a crank on said main shaft, a driving pin on said crank, a slotted crank driven by the crank pin, a driven shaft on which the slotted crank is mounted, a casing having a closing plate, a bearing on said closing plate in which the driving shaft is mounted, a bearing on the casing in which the driven shaft 1s mounted, means provided on the closin plate and-onthe casing to enable these latter to slide and to be fixed with respect to each other, a crank on the driven s aft, a lever one end of which is driven by the said last mentioned crank, a swin g shaft on which the said lever is pivote intermediate of its ends, a cross bar on the other end of said lever and claw levers pivoted on the swinging shaft and controlled by said cross bar, substantially as set forth.

8. In means for driving cinematograph apparatus the combination of a driving shaft, a crank on said main shaft, a driving pin on said crank, a slotted crank driven by the crank pin, a driven shaft on which-the slotted crank is mounted, a casing having a closing plate, a bearin on said closin plate in which the driving s aft is mounte a bearing on the casing in which the driven shaft is mounted, means provided on the closin plate and on the casing to enable these latter to slide and to be fixed with claw levers in contact withsaid stops, substantially as set forth.

9. In means for driving cinematographapparatus the combination of a driving shaft, a crank on said main shaft, a driving pin on said crank, a slottedcrank driven by the'crank pin, a driven shaft on which the slotted crank is mounted, a casing having a closing plate, a bearing 'on said closing plate in which the driving shaft is mounted, a bearing on the casing in which the driven shaft is mounted, means provided 'on the closingplate and on the casing to enable these latter to slide and to be fixed with respect to each other, a crank on the driven shaft, a lever one end of which is driven by the said last menticned crank, a'swinging shaft on which the said lever is pivoted in- .termediate of its ends, a ,cross bar on the other end of said lever, stops on said cross bar, claw levers pivotedon the swinging shaft, a second cross bar bearing at its ends upon the claw levers and a spring bearing upon the last mentioned cross bar to normally retain the claw levers in contact .with

said stops, substantially as set forth.

10. In means for driving cinematograph apparatus the combination of a driving shaft, a crank on'said main shaft, a driving pin on said crank, a slotted crank driven by the crank pin, a driven shaft on which the slotted crank is mounted, a casing having a closing plate, a slotted flange on the casing, screws passing through the slotted flange and entering t e closing plate, a bearin on said closing plate in whlch the driving s aft is mounted, a bearing on the casing in which the drivenshaft is mounted, a crank on the driven shaft, a lever oneend of which is driven by the last mentioned crank, a swing ing shaft on which the said lever is pivoted intermediate of its ends, a cross bar on the other end of said lever and claw levers pivoted on the swinging shaft and controlled by said cross bar, substantially as set forth.

11. In means for driving cinematograph I apparatus the combination of a drivm shaft, a crank on said main shaft, a drivlng pin on said crank, a slotted crank driven by the crank pin, a driven shaft on whichtthe slotted crank is mounted, a casing having a closing plate, a slotted flange on the casing," screws passing throu h the slotted. flange and entering the c osing plate, a

bearing on said closing plate in which the cross bar on the other end of said lever,

stops on said cross bar, claw levers pivoted on the swinging shaft and a spring to normally retain the claw levers in contact with said stops, substantially-as set forth.

12. In means for driving cinematograph apparatus the combination of a driving shaft, a crank on said main shaft, a driving pm on said crank, a slotted crank driven by the crank pin, adriven shaft on which the slotted crank is mounted, a casing having 'aclosing' plate, a slotted flange on the casing, screws passing through the slotted flange and entering the closing plate, a bearing on said. closing late in which the driving shaft is mounte a bearingon the casing in which the driven shaft is mounted,

a crank on the driven shaft, a lever one end of which is driven by the last mentioned crank, a swinging shaft onwhich the said lever 'is pivoted intermediate ofits ends, a cross bar on the other end of said lever, stops on said cross bar, claw levers pivoted on the swinging shaft, a secondcros's "bar bearing at its ends upon the claw levers and a spring bearing upon the last mentioned I cross bar'to normally retain the claw levers 1n contact with said stops, substantially'as set forth.

In witness'whereof I have hereunto set my hand. 7

Signed at London, England, this 13th day of May, 1929.. I

ARTHUR"SAMUEL-NEWMA N; 

